Part 26, Metalworking Machinery

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MIOSHA-STD-1124 (07/19) For further information 8 Pages Ph: 517-284-7740 www.michigan.gov/mioshastandards

DEPARTMENT OF LICENSING AND REGULATORY AFFAIRS

DIRECTOR’S OFFICE

GENERAL INDUSTRY SAFETY AND HEALTH STANDARD

Filed with the Secretary of State on March 29, 1974 (as amended April 2, 1979) (as amended May 17, 1983) (as amended December 5, 1991) (as amended February 18, 1997) (as amended July 25, 2019)

These rules take effect immediately upon filing with the secretary of state unless adopted under section 33, 44, or 45a(6) of the administrative procedures act of 1969, 1969 PA 306, MCL 24.233, 24.244, or 24.245a.

Rules adopted under these sections become effective 7 days after filing with the secretary of state.

(By authority conferred on the director of the department of licensing and regulatory affairs by sections 16 and 21 of the Michigan occupational safety and health act, 1974 PA 154, MCL 408.1016 and 408.1021, and Executive Reorganization Order Nos. 1996-2, 2003-1, 2008-4, and 2011-4, MCL 445.2001, 445.2011, 445.2025, and 445.2030)

R 408.12616, R 408.12631, R 408.12633, R 408.12638, R 408.12639, and R 408.12642 of the Michigan Administrative Code are amended as follows:

GENERAL INDUSTRY SAFETY AND HEALTH STANDARD PART 26. METALWORKING MACHINERY

Table of Contents GENERAL PROVISIONS ...... 2 SPECIFIC EQUIPMENT ...... 5 R 408.12601. Scope...... 2 R 408.12631. Squaring shear...... 5 R 408.12602. Applicability...... 2 R 408.12632. Circular metal saws...... 6 R 408.12603. Definitions A to C...... 2 R 408.12633. Bar stock and rod machines; screw R 408.12604. Definitions F to L...... 2 machines; thread machines...... 6 R 408.12605. Definitions M, O...... 2 R 408.12634. Planers...... 6 R 408.12606. Definition P...... 2 R 408.12635. Metal band saws...... 6 R 408.12607. Definitions R, S...... 3 R 408.12636. Metal embossing machines...... 6 R 408.12608. Definitions T to W...... 3 R 408.12637. Powered feed rolls...... 6 R 408.12611. Employer responsibility...... 3 R 408.12638. Wire drawing machines...... 6 R 408.12612. Employee responsibility...... 3 R 408.12639. Boring, honing, reaming, and drilling. .... 7 R 408.12615. Aisles, floor, and platforms...... 3 R 408.12640. Milling...... 7 R 408.12616. Machine and equipment installation...... 3 R 408.12641. Roll-form machines...... 7 R 408.12617. Controls...... 3 R 408.12642. Powered benders...... 7 R 408.12618. Maintenance and lubrication...... 3 R 408.12643. Tumbling mills, barrels and revolving R 408.12619. Hydraulic and pneumatic systems...... 4 cylinders...... 7 R 408.12620. Chip Guards; protection from coolant R 408.12644. Alligator shears...... 7 splash...... 4 R 408.12645. Riveters, braders and stakers...... 7 R 408.12622. Electric magnets and vacuum chucks. .. 4 R 408.12647. Slitter...... 8 R 408.12648. Lathes...... 8 R 408.12649. Cold header...... 8 R 408.12650. Multislide machines...... 8

GENERAL PROVISIONS R 408.12605. Definitions M, O. Rule 2605. (1) “Metal band saw” means a machine R 408.12601. Scope. that is equipped with 2 wheels on which a continuous Rule 2601. This part sets forth rules, not covered in blade is used for metal cutting purposes. other standards, for the safety of employees in all (2) “Metal embossing machine” means a places of employment where a hazard may exist in the machine that imparts a design to a piece of metal by use of metalworking machinery. Press brakes and pressure. handheld portable powered tools are not included in (3) “Metalworking machinery” means a machine this part. which removes, forms, works, or shapes metal or which is used to assemble parts. R 408.12602. Applicability. (4) “Milling machine” means a machine with a Rule 2602. (1) A metalworking machine with the point multi-edged revolving cutter which, when brought into of operation inaccessible or remote from the operator contact with metal, makes a desired cut. and other assigned employees shall not be required to (5) “Multislide” means a machine which has dies have guarding for the point of operation. attached to ends of multiple slides and which, when (2) The general rules of this part apply to all actuated, brings the dies together to piece, form, or metal working machinery. bend coil stock into a desired shape. (3) The specific rules shall apply only to those (6) “Operator” means an employee who controls metalworking machines specified. the machine or operation. (7) “Operator’s position” means that location R 408.12603. Definitions A to C. where an operator controls a machine or operation. Rule 2603. (1) “Aisle” means a designated path of (8) “Other assigned employees” means those travel for vehicles and employees. employees who service or attend a machine or (2) “Alligator shear” means a machine having a operation. powered blade and a fixed blade which creates a shearing action when the moving blade meets the fixed R 408.12606. Definition P. blade. Rule 2606. (1) “Pay off”, sometimes called a top hat, (3) “Awareness device” means a device that will means an uncoiling device upon which the undrawn warn the operator that he or she is approaching the coil of wire rests. point of operation. (2) “Pinch point” means a point where it is (4) “Barrier” means protection for an operator possible to be caught between the moving parts of a from a hazard point on machinery and equipment. machine and the material in process or between (5) “Boring machine” means a machine with a moving and stationary parts of a machine. boring tool which, when brought into contact with metal (3) “Planer” means a machine with a cutting tool by force, increases the size of a hole. held stationary while the work is moved back and forth (6) “Circular metal saw” means a machine with a underneath it to reduce 1 of its dimensions. support for the material and with a circular blade which (4) “Point of operation” means that point at which is used for cutting metal. cutting, shaping, working, assembly or forming is (7) “Cold header” means a machine consisting of accomplished upon the stock. a set of dies that, when closed by a ram with a hammer (5) “Point of operation device” means a control action, forms headed parts such as bolts or rivets from or attachment which: rod stock. (a) Restrains the operator from inadvertently reaching into the point of operation. R 408.12604. Definitions F to L. (b) Prevents normal machine operation if the Rule 2604. (1) “Fixed barrier” means a type of guard, operator’s hands are inadvertently within the point of attached by fasteners that cannot be readily removed, operation. that keeps the operator from the point of operation. (c) Automatically withdraws the operator’s hands (2) “Interlocked barrier” means a type of guard if they are within the point of operation as the machine with a control interlocked with a machine circuit that will cycles. stop the machine if the barrier is removed or opened. (6) “Powered bender” means a machine (3) “Lockout” means to secure by use of a lock. consisting of dies or fixtures located between a moving and a fixed machine part. When metal is placed between the parts, the moving part is pressed against the fixed part, bending the metal to a desired shape. (7) “Powered feed rolls” means parallel rolls that run inward to move material into the point of operation of a machine. (8) “Presence sensing device” means a device designed, constructed and arranged to create a sensing field or area and to deactivate the point of operation when an operator’s hand or other body part is within such field or area.

R 408.12607. Definitions R, S. R 408.12615. Aisles, floor, and platforms. Rule 2607. (1) “Remote” means that an operator or Rule 2615. (1) The outline of a designated aisle shall other assigned employee who is operating or attending be marked or otherwise indicated. a machine cannot, because of distance or location, (2) A designated aisle shall be not less than 4 place any part of his or her body within the point of feet wide and access shall be maintained from a operation when a hazard exists. work-station to an aisle. (2) “Riveter” means a machine that consists of a ram with a tool attached so that, when pressed against R 408.12616. Machine and equipment installation. a fixed part with a rivet or other fastener in between, it Rule 2616. (1) A metalworking machine or equipment will cause pieces of material to be joined together. must be installed so that the normal operator's position (3) “Roll form machine” means a machine with is not in an aisle, or the employee shall be protected by in-running rolls so arranged to form a desired shape of a guardrail system in compliance with General Industry metal when the metal is fed through the rolls. Safety and Health Standard Part 2. “Walking-Working (4) “Safety factor” means the ratio of the Surfaces,” being R 408.10201 to R 408.10241 of the breaking strength of a piece of material or an object to Michigan Administrative Code. the maximum designed load or stress applied when in (2) Metalworking machines and equipment, use. except portable types, must be fastened to a floor, (5) “Slitter” means a machine which has circular platform or bench to prevent tipping or inadvertent knives mounted on powered shafts with the cutting movement, or be equipped with nonslip pads. faces adjacent to each other in a manner that shears (3) Electrically powered metalworking machines metal when it is fed through the knives. and equipment must be grounded. (6) “Squaring shear” means a machine that has (4) Provision must be made to prevent a table which utilizes a driven ram with a blade for metalworking machines and equipment from shearing action. The ram moves a nonrotary blade at a automatically restarting upon restoration of power after constant rate past the edge of a fixed blade at the table a power interruption, if such restart would be and cuts metal. hazardous.

R 408.12608. Definitions T to W. R 408.12617. Controls. Rule 2608. (1) “Tumbling mill” means a machine with Rule 2617. (1) When a presence-sensing device is a powered revolving container which is used to dry, used as a safety device, the control shall incorporate a smooth or polish metal parts. fail-safe feature. (2) “Wire drawing machine” means a machine (2) Machine start controls shall be designed and that draws or pulls metal wire or rod through a installed or guarded to prevent unintentional activation predetermined size of die to reduce its diameter. by contact with objects or a part of the body. (3) A machine shall be provided with a stop R 408.12611. Employer responsibility. device within reach of the operator’s designated Rule 2611. An employer shall: position. (a) Provide training to each employee as to the potential hazards and safe operation of the assigned R 408.12618. Maintenance and lubrication. job. Rule 2618. (1) A power source of any metalworking (b) Maintain metalworking machinery, in machine or equipment to be repaired or services shall conformance with this part. be locked out and, where required, residual pressure (c) Establish and maintain a lockout procedure relieved by each employee doing such work if as prescribed in subrule (1) or rule 2618. unexpected motion would cause injury, except where power is essential for testing and set up. R 408.12612. Employee responsibility. (2) Lubrication shall be accomplished by 1 of the Rule 2612. An employee shall: following: (a) Not use machinery and equipment unless (a) Manually, when the machine can be shut off authorized and trained in its use. and locked out. (b) Report defective machinery and equipment (b) Automatic pressure or gravity feed system. and hazardous conditions, when detected, to his/her (c) Extension pipe leading to an area outside of supervisor. guards or away from any hazard. (c) Not remove guards from machinery and (d) Or a means which would provide equal or equipment except when necessary for servicing. The greater protection to the employee than (a), (b) or (c). guard shall be replaced before returning the machinery (3) In any case, rule 732 of the general industry or equipment to normal operation. safety standards commission standard, Part 7. Guards (d) Not wear loose clothing and neckwear for Power Transmission, being R 408.10732 of the encircling the neck or exposed jewelry, such as rings Michigan Administrative Code, shall be followed. and necklaces, near a machine having reciprocating or rotating shafts or spindles.

R 408.12619. Hydraulic and pneumatic systems. Rule 2619. (1) A hydraulic or pneumatic system shall be designed and constructed to have a safety factor of not less than 4. (2) Hydraulic or pneumatic flexible lines shall be protected from chafing. (3) When hydraulic, air or steam lines are bled, equipment supported by these systems shall be physically blocked or otherwise secured by means other than components in the circuit, to provide for the safety of employees working on or about the equipment.

R 408.12620. Chip Guards; protection from coolant splash. Rule 2620. (1) Chips which create a hazard shall be controlled by a chip guard that is located between the point of operation and any employee within range. (2) If a machine uses a coolant, an employee shall be protected from coolant splash. (3) Chips, dust, or sludge shall be removed by brush, tools, or mechanical means. Where air pressure is used, the discharge of a hand-held nozzle shall be less than 30 pounds per square inch under a static flow condition.

R 408.12622. Electric magnets and vacuum chucks. Rule 2622. (1) A grinding machine with a rotating table and equipped with a magnetic or vacuum chuck to hold the stock shall be interlocked to prevent contact between the stock and tool, unless the stock is secured to the table or chuck and the employee is protected by a guard capable of retaining flying stock within the machine. (2) A grinding machine with a reciprocating table and equipped with a magnetic or vacuum chuck to hold the stock shall have an end guard to protect an employee from flying stock or tools, or the machine shall meet the following conditions: (a) The machine shall be located so that, in case of chuck or magnet failure, any flying material or object will carry into a solid wall. (b) The wall shall be covered with an energy absorptive material capable of absorbing the shock and preventing the ricocheting of flying materials. Plaster board shall not be used where coolant is used in the operation. (c) The machine shall be positioned so as not to allow room for an employee to pass between the machine and the wall.

SPECIFIC EQUIPMENT (3) An employee tending the backside of a squaring shear shall be separated from the moving R 408.12631. Squaring shear. parts by a table, rack or chute, such as the back Rule 2631. (1) An employer shall ensure that a gauge, shear blade or work piece on which the squaring shear, mechanical or manual, shall have 1 of sheared stock shall fall before being handled, or the the following: point of operation must be guarded as prescribed in (a) The blade and hold-down clamp guarded by subdivision (a) of subrule (1). The table, rack or chute a fixed barrier set in accordance with Figure 1. must maintain the employee's position not less than 3 (b) Automatic clamps set within 1/4 inch of the feet from the point of operation or a hazardous moving table or stock with the cutouts filled in so that the part. fingers of the operator cannot enter the pinch point. (4) An automatically fed squaring shear must be (c) A self-adjusting barrier with a limit of not guarded by a barrier so located to prevent access to more than 1/4 inch above the table or material. the point of operation. The guard may be swung aside (2) Where small stock is being sheared, a for hand feeding, providing the control is on inch pusher stick must be provided and used. setting.

FIGURE 1

Fig. 1 shows the accepted safe openings between the bottom edge of a guard and feed table at various distances from the danger line (point of operation).

The clearance line marks the distance required to prevent contact between the guard and moving parts.

The minimum guarding line is the distance between the infeed side of the guard and the danger line that is 1/2 inch from the danger line.

The various openings are such that for average size hands, an operator’s fingers will not reach the point of operation.

After installation of point of operation guards and before a job is released for operation, a check must be made to verify that the guard will prevent the operator’s hands from reaching the point of operation.

R 408.12632. Circular metal saws. R 408.12636. Metal embossing machines. Rule 2632. (1) A circular metal saw shall meet all of Rule 2636. (1) A press-type metal embossing the following: machine shall be guarded at the point of operation as (a) Have a guard made of material not less than prescribed in the general industry safety standards 1/8 inch thick and capable of protecting the operator commission standards, Part 23. Hydraulic Power from broken teeth of the blade and chips. The guard Presses or Part 24. Mechanical Power Presses, being shall enclose not less than the upper half of the blade, R 408.12301 et seq. and R 408.12401 et seq., including the arbor and nut, and be positioned to stop respectively, of the Michigan Administrative Code. sparks and chips from striking the operator. (2) A powered roll type metal embossing (b) Have a water tank below the table or an machine shall be guarded as prescribed in enclosure to trap sparks and chips. R 408.12637. (c) Have a braking means capable of stopping the saw within 20 seconds, or the operator shall R 408.12637. Powered feed rolls. stand-by until the blade stops. Rule 2637. Powered feed rolls shall have 1 of the (2) A circular metal saw wheel or blade shall be following: operated at not more than its rated speed. (a) The in-running side of the feed rolls guarded by a barrier, fixed or adjustable, so designed that the R 408.12633. Bar stock and rod machines; screw material can be fed without permitting the fingers to be machines; thread machines. caught between the feed rolls or feed rolls and guard. Rule 2633. A bar stock and rod machine, screw (b) An emergency stop device which can be machine or thread machine must have the bar stock activated by the body to stop the feed rolls. When an that extends beyond the machine guarded by a trough emergency stop device has been actuated, it shall be or tube or guarded by a guardrail system in compliance required that the machine be restarted manually. with General Industry Safety and Health Standard Part 2. “Walking-Working Surfaces,” being R 408.10201 to R 408.12638. Wire drawing machines. R 408.10241 of the Michigan Administrative Code. Rule 2638. (1) An employer shall ensure that a wire drawing machine has 1 of the following: R 408.12634. Planers. (a) An emergency stop device adjacent to the Rule 2634. (1) A planer shall have the openings in the block available to shut down the machine. bed under the table, covered, and have a barrier (b) An emergency stop device, such as a bar, protecting an employee if the table or material travels rope or cable, along the operating side of a continuous within 18 inches of a fixed object, such as a wall or drawing frame or unit so designed that the device will post. stop the machine at any point along the unit. When an (2) An employee shall not ride the table of a emergency stop device has been actuated, the planer unless he or she is protected against falling off machine must be restarted manually. the table. (2) The live block, capstan and straightening rolls of a wire drawing machine must be enclosed with R 408.12635. Metal band saws. a barrier guard. Rule 2635. (1) A vertical metal band saw shall be (3) A wire drawing machine must be equipped guarded as follows: with a stopping device so arranged to stop the block (a) The band wheels and all portions of the automatically if the operator can be caught in the wire blade, except as provided by subdivision (b) of this or the reel drawn to the machine, or the area from and subrule, shall be fully enclosed by solid material or including the payoff to the machine must be enclosed perforated metal which prevents the operator from with a guardrail system in compliance with General coming in contact with the blade. Industry Safety and Health Standard Part 2. (b) The portion of the blade between the table “Walking-Working Surfaces,” being R 408.10201 to and the front side of the upper wheel shall have an R 408.10241 of the Michigan Administrative Code. adjustable blade guard that is maintained with 1/4 inch The stop device must be as prescribed in subrule of the work to be cut or the holder of the material being (1)(b). cut. (4) Where straightening rolls are not used, a (2) A horizontal metal band saw shall be snarl switch interlocked with the live block or capstan guarded as follows: must be provided. (a) The band wheels and the upper portion of (5) A pinch point less than 8 feet from a floor or the blade shall be fully enclosed by solid material or platform, created by the moving wire or rod passing perforated metal which prevents the operator from over or through the equipment, must be guarded by a coming in contact with the upper portion of the blade. barrier if exposed to contact. (b) The guides shall be maintained as close as (6) All barrier guards or enclosures that can be practical to the stock being cut. removed or opened without tools must be interlocked (3) A horizontal metal band saw used in a with the live block or capstan. vertical position shall be guarded as required by the provisions of subrule (1) of this rule.

(7) A pinch pointer used to prepare wire or rod R 408.12642. Powered benders. for insertion into a die must be guarded if the opening Rule 2642. (1) An employer shall ensure that a is more than 1/4 larger than the material being fed into powered bender has 1 of the following: it. (a) A barrier or enclosure guard that is designed to protect the operator from the pinch points when R 408.12639. Boring, honing, reaming, and drilling. clamping parts in the bender. Rule 2639. (1) An employer shall ensure that when (b) A single-stroke hand control device that can boring, honing, reaming, or drilling, all of the following be activated with 1 hand holding the workpiece, remote provisions apply: from the pinch points, when clamping parts in the (a) Except for hand-held honing, the workpiece bender, or a single-stroke foot control device where is secured by a device to prevent it from being turned both hands hold the workpiece, remote from the by the tool. clamping pinch point. (b) Manual measuring at the point of operation is (c) A 2-hand, single-stroke control device. done only when the tool or rotating workpiece has (2) Where the sweep of the stock intrudes into stopped. the aisle or work area of another employee or (c) A vertical metal cutting machine with a rotary endangers the operator or other employees, an table has a rim guard either fixed or portable around employer must provide a guardrail system in the table of a height to cover any pinch point or rotating compliance with General Industry Safety and Health hazard at the lower side and to a point not less than 2 Standard Part 2. “Walking-Working Surfaces,” being inches above the workpiece or fixture, whichever is R 408.10201 to R 408.10241 of the Michigan higher. Where the rotating table is at floor level, a Administrative Code. removable guardrail system must be installed as prescribed in General Industry Safety and Health R 408.12643. Tumbling mills, barrels and revolving Standard Part 2. “Walking-Working Surfaces,” being cylinders. R 408.10201 to R 408.10241 of the Michigan Rule 2643. (1) A tumbling mill, barrel or revolving Administrative Code. cylinder shall have an enclosure to a height of 42 (d) Multiple-spindle heads, except when used for inches to protect an employee if there are any moving tapping and those with cam-operated slides, have an projections. emergency return control at each station. (2) The enclosures shall have an interlocked (2) A chuck key that is used on a drill press must gate or barrier at the machine opening which shall cut be as prescribed in R 408.12648(2). the power off when the gate or barrier is removed. An inch control may be used for positioning or emptying R 408.12640. Milling. when the gate or barrier is removed. Rule 2640. When milling, all of the following provisions apply: R 408.12644. Alligator shears. (a) Manual adjustments or measurements at the Rule 2644. An alligator shear shall have the jaw point of operation shall be made only after the tool and enclosed with a guard which adjusts to the size and workpiece have stopped. shape of the material. (b) Machine torque shall not be used to loosen nuts. R 408.12645. Riveters, braders and stakers. (c) A chip guard shall be installed between the Rule 2645. (1) A vertical or horizontal ram on a point of operation and the operator and other riveter, brader or staker shall be guarded by a barrier, employees within range. device or enclosure to protect the operator from the (d) The workpiece shall be securely clamped point of operation or an awareness device shall be before the table moves in the direction of the cutter or used to warn the operator he or she is approaching the the cutter moves to the workpiece. point of operation. The guard shall extend to within 3/8 inch of the material. R 408.12641. Roll-form machines. (2) Lodged rivets shall be removed only by a Rule 2641. (1) An automatically fed roll-form machine tool. shall have a shield which runs the entire length of the point of operation and which will prevent horizontal access to the rolls or a continuous stop cable shall be provided along the length of the machine. The shield shall be secured to the machine. (2) A manually fed roll-forming machine shall be guarded as prescribed in R 408.12637.

R 408.12646. Powered clamping device. R 408.12648. Lathes. Rule 2646. An operator of a powered clamping Rule 2648. (1) A lathe face plate or chuck with device that is used for holding a workpiece shall be projections on the periphery shall not be used unless protected by employing 1 of the following methods: guarded. (a) Guarding or adjusting so that the opening (2) A chuck key for a lathe chuck shall be 1 of between the clamp and workpiece insertion is not more the following: than 1/4 of an inch. (a) Counterweighted to return it to storage (b) Two-hand controls furnished to, and used by, position. each operator. (b) Interlocked to prevent the chuck from being (c) Providing a single control for each operator if power driven when the key is in the chuck. the operator is remote from the point of operation or (c) Spring loaded to eject it from the chuck. pinch point. (d) A means which would prevent the clamping R 408.12649. Cold header. device from closing while the employee is in the point Rule 2649. (1) The sliding head and the dies of a cold of operation or pinch point. header shall be blocked before starting any service work on the dies. R 408.12647. Slitter. (2) All points of operation from the straightening Rule 2647. A slitter shall have: rolls to, and including the dies, shall be enclosed. (a) The in-running side guarded as specified in rule 2637. R 408.12650. Multislide machines. (b) A device to cut the scrap into short lengths or Rule 2650. A multislide machine shall have all a rewinder to rewind the scrap for safe handling. moving parts guarded by barriers or an enclosure. (c) A method to secure the loose end to the coil before removing it from the rewinder.

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